MESOSCALE DISCUSSION 1537
   NWS STORM PREDICTION CENTER NORMAN OK
   1145 AM CDT THU JUL 19 2007
   
   AREAS AFFECTED...SRN IND INTO SWRN OH AND NRN KY/ WRN WV
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 191645Z - 191745Z
   
   DEVELOPING STORMS SHOULD CONTINUE TO INTENSIFY THIS AFTERNOON AND
   CONVECTIVE TRENDS ARE BEING MONITORED FOR A WW ISSUANCE.
   
   AS OF 1630Z...REGIONAL RADAR IMAGERY INDICATED WIDELY SCATTERED
   TSTMS DEVELOPING FROM NEAR IND EWD TO W OF ILN AND SWD TO N OF
   JKL...ON THE SRN PERIPHERY OF MORE WIDESPREAD CLOUDINESS WHERE A
   DIFFERENTIAL HEATING BOUNDARY IS BEING ESTABLISHED. 
   MOREOVER...RADAR DATA INDICATE THE PRESENCE OF AN MCV OVER CNTRL IND
   WHICH MAY BE CONTRIBUTING TO THE DEVELOPMENT OF THESE STORMS.
   
   AIR MASS ALONG THE OH RIVER HAS WARMED THROUGH THE 80S LATE THIS
   MORNING/EARLY THIS AFTERNOON...WHEN COUPLED WITH DEWPOINTS IN THE
   LOWER 70S IS RESULTING IN A MODERATELY UNSTABLE AIR MASS WITH
   MLCAPES OF 1000-2000 J/KG.  REGIONAL VWPS AND RUC OBJECTIVE FIELDS
   INDICATE THE STRONGEST DEEP LAYER SHEAR RESIDES ALONG THE I-70
   CORRIDOR NWD WITH A GENERAL DECREASE IN MID AND HIGH-LEVEL FLOW SWD
   TOWARD THE OH RIVER.  NONETHELESS...THE MODERATE INSTABILITY IN
   CONJUNCTION WITH DEEP WLY UNIDIRECTIONAL WIND FIELDS SHOULD PROMOTE
   THE DEVELOPMENT OF CONVECTIVE LINE SEGMENTS CAPABLE OF DAMAGING
   WINDS AND PERHAPS SOME HAIL.
   
   ..MEAD.. 07/19/2007
   
   
   ATTN...WFO...RLX...JKL...ILN...LMK...IND...PAH...ILX...
   
   39138743 39598644 39748564 39828477 39658391 39118236
   38478209 37888203 37528242 37598378 37738415 38048473
   38008564 37938643 37968696 38058742 38568761